Pursuant to Regulation 34(1) of Securities Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 ('SEBI Listing Regulations'), we are submitting herewith ....

Hindustan Oil Exploration Company Limited ‘Lakshmi Chambers’, 192, St. Mary’s Road, Alwarpet, Chennai - 600 018. INDIA. : 91 (044) 66229000 ● Fax: 91 (044) 66229011 / 66229012 E-mail: contact@hoec.com ● Website: www.hoec.com CIN: L11100GJ1996PLC029880 September 2, 2026 By Online The Listing Department The Corporate Relationship Department National Stock Exchange of India Ltd., BSE Limited, “Exchange Plaza”, Bandra Kurla Complex, 1st Floor, P. Jeejeebhoy Towers, Bandra (East), Mumbai – 400 051 Dalal Street, Mumbai – 400 001 Stock Code: HINDOILEXP Stock Code: 500186 Dear Sir/Madam Sub: Submission of Annual Report for FY 2025-26 and Notice of the 42nd AGM Pursuant to Regulation 34(1) of Securities Exchange Board of India (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“SEBI Listing Regulations”), we are submitting herewith the Annual Report of the Company for the financial year 2025-26 along with the Notice convening the 42nd Annual General Meeting of shareholders of the Company, which is being sent through electronic mode to the Members who have registered their e-mail addresses with the Company/Depositories. Also, a letter providing the web link and exact path where complete details of the Annual Report of FY 2025-26 is available, is being sent to Members who have not registered their e-mail IDs. The Annual Report and the Notice of AGM is also uploaded on the Company’s website at https://hoec.com/annual-reports/ Kindly take the same on record. Thanking you, Yours Sincerely, For Hindustan Oil Exploration Company Limited G. Josephin Daisy Company Secretary & Compliance officer Encl.: a/a Registered Office: ‘HOEC HOUSE’, Tandalja Road, Off Old Padra Road, Vadodara - 390 020. INDIA. : 91 (0265) 2330766 ● E-mail: contact@hoec.com ● Website: www.hoec.com HINDUSTAN OIL EXPLORATION COMPANY LIMITED Regd. Office: ‘HOEC House’, Tandalja Road, Vadodara, Gujarat - 390 020 (India) CIN: L11100GJ1996PLC029880 • E-mail: hoecshare@hoec.com NOTICE OF THE 42ND ANNUAL GENERAL MEETING NOTICE is hereby given that the Forty Second Annual General Meeting (AGM) of the Members of Hindustan Oil Exploration Company Limited will be held on Friday, the 25th day of September 2026 at 11:00 a.m. through Video Conferencing ("VC") / Other Audio-Visual Means ("OAVM"), to transact the following businesses: ORDINARY BUSINESS 1. To receive, consider and adopt: (a) the audited standalone financial statements of the Company for the financial year ended March 31, 2026 together with the reports of the Board of Directors and the Auditors thereon; and (b) the audited consolidated financial statements of the Company for the financial year ended March 31, 2026 together with the reports of the Auditors thereon. 2. To appoint a director in place of Mr. Ashok Kumar Goel (DIN: 00025350) who retires by rotation and being eligible, offers himself for re-appointment. SPECIAL BUSINESS 3. To consider increase in borrowing limits of the Company from $ 750 Crores to $ 1,000 Crores To consider and, if thought fit, to pass with or without modification(s), the following Resolution as a Special Resolution: "RESOLVED that in supersession of the earlier resolution passed by the members at the 40th Annual General Meeting of the Company held on September 26, 2024, and pursuant to the provisions of Section 180(1)(c) and other applicable provisions, if any, of the Companies Act, 2013 and Rules framed thereunder, as amended from time to time, consent of the members of the Company be and is hereby accorded to the Board of Directors (hereinafter referred to as "Board" which term shall be deemed to include any Committee which the Board may have constituted or hereinafter constitute, to exercise its powers, including the powers conferred by this resolution) to borrow from time to time, any sum or sums of monies which together with the monies already borrowed by the Company (apart from temporary loans obtained or to be obtained from the Company's bankers in the ordinary course of business) may exceed the aggregate of the paid-up capital, free reserves and securities premium of the Company, provided that the total amount so borrowed by the Board shall not at any time exceed $ 1,000 Crores (Rupees Thousand Crores only) or the aggregate of the paid-up capital, free reserves and securities premium of the Company, whichever is higher. RESOLVED FURTHER that the consent of the members be and is hereby accorded to the Board of Directors to borrow monies as referred above, from any one or more banks, persons, firms, body corporates, institutions, and foreign source by way of deposits, advances, debentures, bonds, commercial papers, foreign currency convertible bonds, depository receipts, other borrowing, and any other instruments / forms, in Indian rupee and foreign currency on such terms, interest, conditions, covenants, securities, etc. as may be agreed upon and the Board thinks fit including any modifications thereof from time to time. RESOLVED FURTHER that for the purpose of giving effect to this resolution, the Board be and is hereby authorized to sign and execute all such documents, deeds, instruments and writings as may be required, to settle any question, difficulty or doubt that may arise in respect of the aforesaid borrowings and to do all such acts, deeds, matters and things as it may in its absolute discretion consider necessary, proper or desirable and to settle any question, difficulty or doubt that may arise in this regard. HINDUSTAN OIL EXPLORATION COMPANY LIMITED 4. To approve creation of charges on the movable and immovable properties of the Company, both present and future, in respect of borrowings To consider and, if thought fit, to pass with or without modification(s), the following Resolution as a Special Resolution: RESOLVED that in supersession of the earlier resolution passed by the members at the 40th Annual General Meeting of the Company held on September 26, 2024 and pursuant to provisions of Section 180(1)(a) and other applicable provisions, if any, of the Companies Act, 2013 and Rules framed thereunder, as amended from time to time, consent of the members of the Company be and is hereby accorded to the Board of Directors of the Company (hereinafter referred to as "Board" which term shall be deemed to include any Committee which the Board may have constituted or hereinafter constitute, to exercise its powers, including the powers conferred by this resolution) to create such charge, pledge, mortgage and hypothecation in such form, manner, ranking and at such time and on such terms and conditions as the Board may deem fit in the interest of the Company, on all or any of the immovable and / or movable properties of the Company, both present and future, and / or any other assets or properties, either tangible or intangible, of the Company and / or the whole or any part of the undertaking(s) in favour of the Lender(s) for securing the borrowing availed or to be availed by the Company, subject to the limits approved by the members under Section 180(1)(c) of the Act together with the interest at the respective agreed rates, additional interest, compound interest in case of default, accumulated interest, liquidated damages, commitment charges, premia of prepayment, all other costs, charges and expenses and all other monies payable by the Company in terms of the Loan Agreement(s) / Heads of Agreement(s) or any other document, entered into / to be entered into between the Company and the Lender(s) in respect of the said loan(s) / borrowing(s). RESOLVED FURTHER that for the purpose of giving effect to this resolution, the Board be and is hereby authorized to finalise, settle and execute such documents / deeds / writings / papers / agreements as may be required and to do all such acts, deeds, matters and things, as it may in its absolute discretion consider necessary, proper or desirable and to settle any question, difficulty or doubt that may arise in this regard. 5. To make investments, giv [Showing first 8,000 characters — download PDF for full document]